<template>
	<view>
		<!--使用自定义的搜索组件-->
		<!-- <my-search :bgcolor="'pink'" :radius="3"></my-search> -->
		<my-search  @click="gotoSearch"></my-search>
		 
		<view class="scroll-view-container">
			<!--左侧的滑动区域-->
			<scroll-view class="left-scroll-view" scroll-y="true" :style="{height:wh+'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i===active?'active':'']" @click="activeChanged(i)">{{item.cat_name}}</view>
				</block>
			</scroll-view>
			<!--右侧的滑动区域-->
			<scroll-view class="right-scroll-view" scroll-y="true" :style="{height:wh+'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<!--二级分类标题-->
					<view class="cate-lv2-title">/ {{item2.cat_name}} /</view>
					<!--二级分类下的三级分类列表-->
					<view class="cate-lv3-list">
						<!--三级分类的item项-->
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<!--三级分类的图片-->
							<image :src="item3.cat_icon"></image>
							<!--三级分类的文本-->
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
				
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badgeMix],
		data() {
			return {
				//当前设备可用的高度
				wh:0,
				cateList:[],
				active:0,
				//二级分类的列表
				cateLevel2:[],
				scrollTop:0
			};
		},
		onLoad() {
			const sysInfo=uni.getSystemInfoSync()
			console.log(sysInfo)
			this.wh=sysInfo.windowHeight-50
			this.getCateList()
		},
		methods:{
			//获取分类列表的数据
			async getCateList(){
				const{data:res} = await uni.$http.get('/api/public/v1/categories')
				if(res.meta.status!==200) uni.$showMsg()
				this.cateList=res.message
				
				console.log(res)
				//为二级分类赋值
				this.cateLevel2=res.message[0].children
			},
			activeChanged(i){
				this.active=i
				
				//重新为二级分类赋值
				this.cateLevel2=this.cateList[i].children
				
				this.scrollTop= this.scrollTop===0?1:0
			},
			//跳转到商品详情
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
		}
	}
</script>

<style lang="scss">
.scroll-view-container{
	display: flex;
}
.left-scroll-view{
	width:120px
}
.left-scroll-view-item{
	background-color: #f7f7f7;
	line-height: 60px;
	text-align: center;
	font-size:12px;
	
	&.active{
		background-color: #FFFFFF;
		position:relative;
		
		&::before{
			content:'';
			display: block;
			width:3px;
			height:30px;
			background-color: #C00000;
			position:absolute;
			top:50%;
			left:0;
			transform: translateY(-50%);
		}
	}
}
.cate-lv2-title{
	font-size: 12px;
	font-weight: bold;
	text-align: center;
	padding:15px 0;
}
.cate-lv3-list{
	display:flex;
	flex-wrap: wrap;
	.cate-lv3-item{
		width:33.33%;
		display:flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		margin-bottom: 10px;
		image{
			width:60px;
			height:60px
		}
		text{
			font-size:12px
		}
	}
}
</style>
